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        <article-title>LDAC2021 9th Linked Data in Architecture and Construction Workshop</article-title>
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      <contrib-group>
        <contrib contrib-type="author">
          <string-name>María Poveda-Villalón</string-name>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Pieter Pauwels (eds)</string-name>
        </contrib>
      </contrib-group>
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      <title>-</title>
      <p>Proceedings of the 9th Linked Data in Architecture and Construction Workshop - LDAC2021
With the support of:</p>
      <p>2
The LDAC workshop series provides a focused overview on technical
and applied research regarding the usage of semantic web, linked data
and web of data technologies for architecture and construction (design,
engineering, construction, operation, etc.). The workshop aims at
gathering researchers, industry stakeholders, and standardization bodies
of the broader Linked Building Data (LBD) community. The aim of the
workshop is to present current developments, coordinate efforts, gather
stakeholders, and elaborate use cases.</p>
      <p>We are pleased to collect in this volume the papers that were submitted
and presented during the 9th Linked Data in Architecture and
Construction Workshop. The workshop took place in Luxembourg,
collocated with the 38th CIB W78 conference on Information and
Communication Technologies. The joint event was organised by the
Luxembourg Institute of Science and Technology (LIST), in
collaboration with Cardiff University and the European Construction
Technology Platform (ECTP).</p>
      <p>The 9th LDAC workshop took place from 11 to 13 October 2021,
followed by the CIB W78 conference from 13 to 15 October. During
these days, the workshop attendees attended the presentations of
thirteen peer reviewed paper submissions in the proceedings.
Furthermore, the workshop included an industry session, with 5
contributions.</p>
      <p>Finally, the workshop also included an inspiring keynote by Ed Curry
(Insight Centre for Data Analytics, Maynooth University, BDVA):
“From Data Platforms to Dataspaces: Enabling Data Ecosystems for
Intelligent Systems”. Digital transformation is driving a new wave of
large-scale datafication in every aspect of our world. Today our society
creates data ecosystems where data moves among actors within
complex information supply chains that can form around an
organization, community, sector, or smart environment. These
ecosystems of data can be exploited to transform our world and present
new challenges and opportunities in the design of intelligent systems.
This talk presents my recent work on using the dataspace paradigm as
a best-effort approach to data management within data ecosystems. The
talk explores the theoretical foundations and principles of dataspaces
and details a set of specialized best-effort techniques and models to
enable loose administrative proximity and semantic integration of
heterogeneous data sources. Finally, I share my perspectives on future
dataspace research challenges, including multimedia data, data
governance and the role of dataspaces to enable large-scale data sharing
within Europe to power data-driven AI.</p>
    </sec>
    <sec id="sec-2">
      <title>Acknowledgments</title>
      <p>We would like to thank the authors and presenters for their qualitative
contributions, the Programme Committee who reviewed the papers
presented in this volume, the keynote speaker Ed Curry for his
availability and talk, and especially also Dr. Calin Boje, Prof. Sylvain
Kubicki and the entire organisational team at LIST Luxembourg
Institute of Science and Technology who made an extraordinary effort
to organise this event as a hybrid event (physical and online), in
conjunction with the CIB W78 conference. This created a highly
interesting and inspiring week of linked data talks for the built
environment.</p>
    </sec>
    <sec id="sec-3">
      <title>Programme Committee</title>
      <p>● Jakob Beetz (RWTH Aachen, Germany)
● Jose Beirao (Instituto Superior Técnico Lisbon, Portugal)
● Calin Boje (Luxembourg Institute of Science and Technology,</p>
      <p>Luxembourg)
● Serge Chávez Feria (Universidad Politécnica de Madrid, Spain)
● Andrea Cimmino Arriaga (Universidad Politécnica de Madrid, Spain)
● Gonçal Costa (La Salle Barcelona, Spain)
● Aaron Costin (Universidad de Florida, Florida, US)
● Daniela De-Luca (Politecnico di Torino, Italy)
● Iker Esnaola-Gonzalez (Tekniker, Spain)
● Alba Fernández-Izquierdo (Universidad Politécnica de Madrid, Spain)
● Arianna Fonsati (Politecnico di Torino, Italy)
● Raúl García-Castro (Universidad Politécnica de Madrid, Spain)
● Daniel Garijo (Universidad Politécnica de Madrid, Spain)
● Al-Hakam Hamdan (Technische Universität Dresden, Germany)
● Elio Hbeich (Univ. Bourgogne Franche-Comté / CSTB, France)
● Tim-Jonathan Huyeng (Technische Universität Darmstadt, Germany)
● Rui De Klerk (University of Lisbon, Portugal)
● Thomas Krijnen (independent researcher, Netherlands)
● Sylvain Kubicki (Luxembourg Institute of Science and Technology,</p>
      <p>Luxembourg)
● Felix Larrinaga (Mondragon University, Spain)
● Maxime Lefrançois (Ecole des Mines de Saint-Etienne, France)
● Haijiang Li (Cardiff University, United Kingdom)
● Kris McGlinn (Trinity College Dublin, ADAPT, Ireland)
● James O'Donnell (University College Dublin, Ireland)
● Pieter Pauwels (Eindhoven University of Technology,</p>
      <p>Netherlands)
● María Poveda-Villalón (Universidad Politécnica de Madrid,</p>
      <p>Spain)
● Dimitrios Rovas (University College London, United Kingdom)
● Ana Roxin (Univ. Bourgogne Franche-Comté, France)
● Georg Ferdinand Schneider (Schaeffler Technologies AG,</p>
      <p>Germany)
● Madhumitha Senthilvel (RWTH Aachen, Germany)
● Álvaro Sicilia (La Salle Barcelona, Spain)
● Walter Terkaj (CNR-STIIMA, Italy)
● Seppo Törmä (VisuaLynk, Finland)
● Anna Wagner (Prostep AG, Germany)
● Jeroen Werbrouck (Ghent University, Belgium)</p>
    </sec>
    <sec id="sec-4">
      <title>Local Committee</title>
      <p>●
●
●
●
●</p>
      <p>Dr. Calin Boje (Luxembourg Institute of Science and
Technology, Luxembourg)
Prof. Sylvain Kubicki (Luxembourg Institute of Science and
Technology, Luxembourg)
Dr. Annie Guerriero (Luxembourg Institute of Science and
Technology, Luxembourg)
Prof. Yacine Rezgui (Cardiff University, United Kingdom)
Dr. Alain Zarli (ECTP, R2M Solution, France)
Organising Committee
●
●
●
●
●
●</p>
      <p>Ana Roxin (Univ. Bourgogne Franche-Comté, France)
Anna Wagner (TU Darmstadt, Germany)
Jakob Beetz (RWTH Aachen, Germany)
Kris McGlinn (ADAPT, Trinity College Dublin, Ireland)
María Poveda-Villalón (Universidad Politécnica de Madrid,
Spain)
Pieter Pauwels (Eindhoven University of Technology,
Netherlands)
Ontology based anamnesis and diagnosis of natural stone damage for
retrofitting
Al-Hakam Hamdan, Peter Katranuschkov and Raimar Scherer
Conversion of legacy domain models into ontologies for infrastructure
maintenance</p>
      <sec id="sec-4-1">
        <title>Anne Göbels and Jakob Beetz</title>
        <p>Queries on Semantic Building Digital Twins for Robot Navigation
Rens de Koning, Elena Torta, Pieter Pauwels, Bob Hendrikx and Marinus
van de Molengraft 32 - 42
TUBES System Ontology: Digitalization of building service systems
Nicolas Pauen, Dominik Schlütter, Jérôme Frisch and</p>
      </sec>
      <sec id="sec-4-2">
        <title>Christoph van Treeck 20 - 31 43 - 54</title>
        <p>Alex Donkers, Dujuan Yang, Bauke de Vries and Nico Baken
A Linked Building Data Approach to Site Planning and Managing
Temporary Construction Items
Alexander Schlachter, Mads Holten Rasmussen and Jan Karlshøj 67 - 78
Data Patterns for the Organisation of Federated Linked Building Data
Jeroen Werbrouck, Pieter Pauwels, Jakob Beetz and Erik Mannens 79 - 90
BPMN-related Ontology for Modeling the Construction Information Delivery
of Linked Building Data</p>
      </sec>
      <sec id="sec-4-3">
        <title>Philipp Hagedorn and Markus König 91 - 102</title>
        <p>Ontological approach for LOD- sensitive BIM-data management
Janakiram Karlapudi, Prathap Valluru and Karsten Menzel
103 - 114
Interoperability between BIM and GIS through open data standards: An
overview of current literature
Eyosias Guyo, Timo Hartmann and Lucian Ungureanu
115 - 126
Dynamic BIM model conversion as inference-based ontology alignment</p>
      </sec>
      <sec id="sec-4-4">
        <title>Pierre Bourreau and Jyrki Oraskari</title>
        <p>bcfOWL: A BIM collaboration ontology</p>
      </sec>
      <sec id="sec-4-5">
        <title>Oliver Schulz, Jyrki Oraskari and Jakob Beetz 127 - 141 142 - 153</title>
        <p>An evaluation of the strict semantics of owl:sameAs in the field of BIM GIS
Integration
Fritz Beck, Jimmy Abualdenien and André Borrmann
154 - 165</p>
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